It really depends on how well you know the girl. What are her interests? What does she like? Go from there.
If you can't think of anything, for girls a gift basket with lotion and bath stuff is always an option and you can usually get them for 10-20 bucks around Christmas.
ummmmmmm......u cold get her a teddy bear, choc let, or a really nice & sweet card
1 out of 3, 2 out of 3, or all of them
its really up to you
Flowers, chocolate, card, stuffed animal, a CD and if you really want it to be cheap and mean the most write a poem to her on how she makes you feel insideWhAt KiNd Of GiRls Do YoU LiKe???